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How does the size and shape of nanoparticles affect their photochemical properties, and what methods can be used to optimize these properties for potential applications in areas such as solar energy conversion and phototherapy?
answered
Feb 24
in
PhotoChemistry
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votes
30
views
How does the signal transduction pathway use chemical reactions to convey information from the cell membrane to the nucleus?
answered
Feb 24
in
BioChemistry
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32
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How does the chemical structure of photovoltaic materials affect their photochemical properties and efficiency in converting light energy into electrical energy?
answered
Feb 18
in
PhotoChemistry
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votes
29
views
What is the mechanism by which sunscreen agents absorb harmful UV radiation, and how can the efficiency of sunscreen be measured and optimized through experimentation?
answered
Feb 14
in
PhotoChemistry
0
votes
38
views
How can we use molecular dynamics simulations to study the protein folding process and predict the most stable conformation of a protein?
answered
Feb 13
in
Computational Chemistry
0
votes
30
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How can we design a new chemotherapy drug that targets cancer cells specifically, without harming healthy cells, and how can we ensure that the drug reaches the cancer cells effectively?
answered
Feb 12
in
Medicinal Chemistry
0
votes
31
views
How can chemistry teachers make the subject more interesting and engaging for students who lack interest in the subject?
answered
Feb 6
in
Chemical education
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votes
33
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How can chemistry educators provide better support and resources for students with learning disabilities, such as dyslexia or ADHD, to ensure they have equal opportunities to succeed in the subject?
answered
Feb 4
in
Chemical education
0
votes
36
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Calculate the standard enthalpy change for the dissolution of 5.00 g of solid sodium hydroxide (NaOH) in water, given that the molar enthalpy of dissolution of NaOH is -44.51 kJ/mol. Assume that the specific heat capacity and density of the solution are the same as pure water and that no heat is lost to the surroundings during the dissolution process.
answered
Feb 3
in
Chemical thermodynamics
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80
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Calculate the enthalpy change for the ionization of sodium chloride given that the enthalpy of formation of NaCl is -411 kJ/mol, and the ionization energy of Na and Cl are 496 kJ/mol and 349 kJ/mol respectively.
answered
Jan 23
in
ThermoChemistry
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55
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A piece of zinc metal is placed in a beaker containing an acidic solution, while a copper electrode is also placed in the same solution. The copper electrode is connected to the positive terminal of a voltmeter, while the zinc electrode is connected to the negative terminal of the voltmeter. If the measured potential between the two electrodes is -0.76 V, what is the corrosion potential of the zinc electrode?
answered
Jan 22
in
ElectroChemistry
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123
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A chemistry student was given a sample of a white crystalline substance, suspected to be a mixture of sodium chloride (NaCl) and potassium chloride (KCl). The student performed an analysis and found that the sample contained 64% chlorine by mass. Calculate the mass percentage of sodium chloride and potassium chloride present in the mixture.
answered
Jan 22
in
Analytical Chemistry
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102
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What is the major product obtained when 1,3-butadiene undergoes electrophilic addition reaction with hydrogen chloride?
answered
Jan 21
in
Organic Chemistry
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52
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Where can we find evidence for the discriminant validity of a theory in organisational psychology?
answered
Jan 16
in
Psychology
0
votes
32
views
What criticisms have been lodged against groupthink theory?
answered
Jan 16
in
Psychology
0
votes
65
views
What is the main argument of cognitive theory?
answered
Jan 15
in
Psychology
0
votes
46
views
Who developed the cognitive model of obsessive-compulsive disorder?
answered
Jan 15
in
Psychology
0
votes
36
views
What is the difference between the inductive and deductive approaches to research?
answered
Jan 10
in
Psychology
0
votes
57
views
What is the term for the loss of one or more electrons by an atom?
answered
Jan 7
in
Science
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50
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What concentrates wave energy or disperses it?
answered
Jan 6
in
Science
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